Magneto.



' S. A. DUVALL.

' MAGNETO.

APPLICATION FILED APR. 27, 1910.

Patented June 6; 1911.

STANIIEYA. DUVALL, or nos ANGELES, CALIFORNIA, Assrenon 'ro JOHN s. NASH, or

CHICAGO, ILLINOIS.

MAGNETO.

Specification of Letters Patent.

Patented June 6, 1911.

Application filed April 27, 1910. Serial No. 558,065.

new and useful Magneto, of which the following is .a specification.

This invention relates to magnetos, particularly adapted for use in sparking e11 cuits of automobiles, etc. I

The main object of the present invention is to provide such a magneto with a cover means serving to retain the parts in place.

Another object of the invention is to provide an improved distributor construction I in connection with the cover.

Other objects of theinvention will appear hereinafter. t v ,5 The accompanying drawings illustrate the. invention, and referring thereto Figure l is an end elevation of the mag- ,eto with the cover. broken away. Fig. 2 is a side elevation of the magneto. Fig. 3 is a vertical section of the fixed member of the distributer.

1 designates the field magnet of the mag- -neto, and 2 frame members at the lower portion thereof, in which is mounted the armature shaft 3 carryingthe armature, not shown.

Secured at one end of the magneto is a fixed distributer member 5, of insulating material, provided with a circular opening 6 and with metallic brackets 7 secured. to the member 5 and extending inwardly in front of said opening. A closure member 8 occupies said opening, being provided .with a flange 9 to fit in a rabbet 10 at the edge of said opening, said closure member 8 being engaged and retained by the brackets 7- aforesaid, said brackets 7 being pivoted at 7 to the member 5,t0 enable them to be turned out of the way in inserting the closure member 8. Said closure member 8 has a vertically extending conductor bar 11 extending within said member 8 and connected at its lowerend to a central block or boss 1.2 which projects within the space or opening 6 in the member 5, the upper end of the bar 11 being upwardlyand rcarwardly iuclined, as shown at 11 to engage under and back of a-terminal bar Lt which extends vertically within the member 5 and is inelined on its lower face, as shown at 14, to fit the upper end of the bar 11, thus lockadapted to make ing the distributor in place. The terminal bar 14 is provided with a vertical socket or recess 15 to receive a suitable connecting plug. Said distributer member 5 is further provided with fixed contacts 16 located in different angular positions around the opening 6 and provided with suitable terminal connections, not shown, located in position to? cotiperate with a rotary distributor member indicated at 24 in Fig. 5 and'having a distributing electrode 24'. The distributer is preferably of the high tension type, the contacts approaching within sparking distance but not touching. The connecting block 12 at the lower end of the bar 11 is provided with a central contact means formed, for example, as a ball 17 retained in position by a plate 18, said ball being contact with the rbtary distributer member. The members 5 and 8 are provided with vertically extending flange or rib portions 20, 21. A cover 22 for the magneto is adapted t fit tightly over the field magnet and over the distributer holding the parts firmly in position, and said cover is provided at one end with, a vertical channel 23 adapted to fit over'the ribs 21..

Any suitable means may be provided for connecting the fixed contacts 16 of the distributer in the circuit, the said connecting means extending, for example, downwardly through the distributor member 5 and passing out at the bottom thereof.

The auxiliary shaft 3 and the shaft of the distributor are connected to be driven in the usual manner, said armature shaft being adapted to operate a timer or circuit breaker 39, provided with aneans such as eyes 28 for connection to suitable operating means, electrical connection to said circuit breaker being made by conductors 45.

What I claim is 1. In a magneto, the combination with the field magnet, of 'a fixed distributer member mounted thereon, and a cover surrounding the field magnet and distributor member and fitting tightly thereon to hold said parts her provided with a circular opening, a closure member fitting in said opening, pivoted retaining members on the .fixed distrilm'ter member to extend over said closure member, a conductor bar extending within said closure member and provided With terminal means at the center of said closure member, a conducting terminal on the lix'ed distributer member, said conductor bar and terminal member being provided with inclined end faces for engagementand contact, and distributer contacts on the fixed distr butor member, in combination with a rotary distributor member mounted Within the fixed distributer member for cooperation with the aforesaid central contact on the closure member and with the aforesaid contact means on'the distributor member.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 21st day of February 1910.

STANLEY A. DUVALL.

In presence of ARTHUR P. KNIGHT. KRANK L. A. GRAHAM. 

